Carburetor



May 21, 1929. J. s. BRoNcA-ro I1,714,156

CARBUIETOR Filed May 31, 1928 2 Sheets-Sheet l Y' 4o 50 49 45 22 www May 21, 1929. J, s, BRONCATQ 1,714,156

- GARBURETOR iied lay s1, 192e 2 sheets-sheet 2.

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Inventor r7.5 .Broncao A`ttorng' Patented May 2l, 1929.

UNITEDy STATES JACK SAMUEL BRONCATO, 0F ST. BONAVENTURE, NEW YORK.

CARBURETOR.- Y

Appucauon nieanay 31, 1928. sentano. 2a1,e95.

The present invention relates to carbure#V tors for. use inconjunction with hydrocar-y bons and has for its prime object to provide a carburetor which is exceedingly economical in use and embodies the features of con.y struction which utilize the volatile gases collected inthe cranky case of theengine with a mixture of monoxide collected*v from the exhaustY of the engine,.such as forms thek s ubject matter of my co-pending application, SerialV No. 281,696, filed May 31, 1928.

A still further very important object of the invention resides in the provision of a carburetor of this ynature which is simple in its construction, compact and convenient in its. arrangement of parts, inexpensive to manufacture and thoroughly efficient and reliable in its use and operation. f y

With the above and numerous other objects in view as will appear asthe descrip-y tion proceeds, the invention resides in certain novel features of construction, andy in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In-the drawing: e

Figure 1 is a side elevation of an engine showing my improved carburetor mountedr thereon,

Figure`2 is a vertical longitudinal section through the carburetor, j l

Figure 8 is a horizontal section therethrough taken substantially on the line 3-3 of Figure 2, and

Figure` 4 is an enlargeddetail section taken substantially on the line 44of Fig- V)'Iect from oppositesides ofA this chamber 11.,l

he pipe 14 is connected by suitable meansf l5 withtliey intakemanifold 6. The pipe 12y ymerges into a downwardly flared portion18 being separatedtherefrom Aby. a partit-ion 19 with the valve seat opening 2O therein.

y vrfiorlyt ofthe manifold 7. is-o` en to the atmosphere. Artube 16 der-y pen snfrom the top of the casing 11l and? Thelower. end of. the portion 18 mergesV into a tube 2l disposed at ythe-.bottom asat 22 by awall which extends .through the bottom ofthe reservoir float chamber case` 9. The lower portionof-.thetube 21 islprovided with perforations 23. The tube 16 sperforated as at 24.

Tubes 26 and'27 risefthrouglrthe bottomV y ofthe case 9one to .eachLv side of theftube 21'and terminate intermediate the ends of thetube 16. l The tube .27 has a restriction in the intermediateeportion thereof as at 28 and forms a valve seat. With the valve seat is associated a, needle valve 29, the shank of which is threaded through the top ofthe casing 1l.- The bottom wall of the case llas is indicated at 30 is of an inverted frusto-conical formation t'o provide a simple opening through whichl the tube 21 extends. Thetube 26 is provided with diagonally Vregistered openings 33' for slidably' receiving a valve shank 34 extending through an opening 35 in the sleeve 16.

A disk 36is formed aty the other: endof thisshank and normally rests on a member 37. This disk is disposed-adjacent the .inner end of the pipe 12. The tubes 26 and 27 are provided below lthe ,carburetory with branches 40 and 41 merging into a pipe 42. A float 43 is mounted in the case 9 and'is fixed to a lever 44 rockably mounted as at 45 inthe compartment 46 of extension 47 formed onone side ofthecase9 and access may beV had theretoby removing a plug 48'.

The bottom wallv of the extension47 iS relatively thick and has a conduit 49 formed thereinoffset asat'50 to provide a valveseat with which 4cooperates aslidable' valvel 51 connected with lthe lever44. When the gasoline in the case 9 becomes low the floatsinks by gravity to raise the valve so as torefill this case as will be quite apparent.- n

A pipe 52 is connected with the conduit 49 and leads from asuitable sourceof gasolineas will'E be readily understood. The exhaust manifold 7. is formed with an opening 54. A frusto conical sleeve 55 isfthreaded in theV opening 54 with its smaller end intev'Phe pipe 42l leads into thesleeve 55 and is then,coiled longitudinally as at 56 for a slight. distance inthe manifold-.7 ,and merges into ai' return-,sectionl 57 which .extends out` 58 With the breather pipe 8. The coil 5G acts as a heating coil as the gases pass through it from the breather pipe to lead these heated gases to the tubes 26 and 27 and a certain amount of exhaust gas is drawn into the pipe 42 by a branch 59 having a funnel shaped terminal in the sleeve 55.

A throttle valve 61 is located in the pipe 14. A needle valve 62 is threadedly engaged through the top Wall of the case 11 to cooper ate with the valve seatV 20. When the engine is in operation to cause the suction through the pipe 14 air is drawn in through the pipe 12 and gasoline is drawn up through tube 2l and tube 16 to be mixed with the air to form the combustible mixture for the engine.

As the throttle valve G1 is opened and the suction becomes greater the disk 36 is affected to be moved away from the pipe 12 inwardly of the case 11 so as to bring a port (35 in the" shank 34 in registry With the interior of the tube 26 so that theV fumes may escape up through this tube to the mixing chamber andl at the same time the shank cuts off some oi the ysupply of gasoline spray coming from the valve seat 2Ol because this shank crosses a portion of the tube 1G Will be appie elated. p

The needle valve29, ofcourse, has Vlixed adjustment and a. certain amount of vapor is always delivered therethrough. This carburetor, therefore, keeps the crank case free of volatile gases thereby assisting in purifying the crankcase oil and preventing the volatile gases therein from doing anyT harm. The mixture of volatile gases and monoxide which are heated in the coil 56 are heated to a very high degree and are taken into the carburetor to be mingled with the gasoline vaporized mixture.

lThe gas from the breather and the exhaust heated by the coil tends to vaporizc the gasoline, and Warm it sowthat when it that it possesses a quicker heating expansion than that of gasoline and air alone.

This new mixture tends to make a. stronger and more powerful mixture in union with gasoline than that `of gasoline and air. The gas from the breather is combustible in itself ivhenheated and. derives this quality vfrom the volatile fumes of the oil and other liquid inthe oil. rThis carburetor structure, therefore, tendsto save gasoline and use in its place an almost lent.

Thus more power is attained, carbonfis reduced an d the crank case is maintained free of fumes. It is thought that the construction, utility, operation andV advantages of this invention will novv be quite apparent equal `burning equivato those skilled in this art Without a more detailed description thereof.

The present embodiment of the invention has been disclosed in detail merely for the purposes of exempliicaton since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

1t ivill be apparent. that changes in the details of construction, and in the combination and arrangement of parts may be resorted to Without departing from the spirit or scope ofV the invention as hereinafter claimed or sacrificing any of its advantages.

l Having thus described my invention, what 1 claim as new is: ,Y V

l. 1n combination, an internal combustion engine comprising an. intake manifold and a crank case, a carburetor including a mixing chamber, a float chamber below the mixing chamber, a sleeveA extending through the chamber having apertures to receive gasoline from the float chamber and apertures to deliver the gasoline for the mixing chamber, an air intake pipe leading` into thev mixing chamber, a 'pipe leading from the mixing chamber adapted to be connected with the said intake manifold, a tube Yrising through the chambers terminating in the mixing chamber, said tube last mentioned adaptedY to be connected with the breather pipe of the said crank case.

2. In combination, an internal combustion I engine comprising an intake manifold and a crank case, a carburetor including a mixing chamber, a float chamber below the mixing chamber, a sleeve extending through the chamber having apertures to receive gaso line from the float chamber and apertures to deliver the gasoline for the mixing chamber, an air intake pipe leading into the mixing chamber, a pipe leading from the mixing chamber adapted to be connected with the said intake manifold, a tube rising through the chambers `terminating in the mixing chamber', said tube last mentioned adapted to be connected with the breather pipe' of said crank case, a shank slidable through openings. in the last mentioned tube and having an end in an opening in the first mentioned tube, saidshank being inclined andv terminating at its lower end in a. disk, a rest in the carburetor for said dlsk,

said `disk being located at the inner end of the air intakeV pipe, said shank having a port normally out of registry with the interior of the second mentioned tube so that when a certain amount of air is sucked in through the air intake pipe it vvillfmov'e the ldisk in-A Wardly to bring the port into registry With the second mentioned tube and cause the shank to partially cut ont the iirst mentioned tube.

3.111 combination, an internal combustion engine comprising an intake-manifold and a crank case, a carburetor including a mixing chamber, a float chamber below the mixing chamber, a sleeve extending throughv the chamber having apertures to receive gasoline from the fioat chamber and apertures to deliver the gasoline for the mixing chamber, an air intake pipe leading into the mixing chamber, a pipe leading from the mixing chamber adapted to be connected with the said intake manifold, a tube rising through the chambers terminating in the mixing chamber, said tube last mentioned adapted to be connected with the breather pipe of said crank case, a shank slidablethrough` openings in the last mentioned tube, said shank being inclined andv terminating at its lower end in a disk, a rest in the carburetor for said disk, said disk being located at the inner end of the air intake pipe, said shank having a port normally out of registry with the interior of the second mentioned tube so that when a certain amount of air is sucked in through the air intake pipe it will move the disk inwardly to bring the port into registry with the second mentioned tube and cause the shank to partially cut out the first mentioned tube, a. third tube rising through the chamber terminating in the mixing chamber, branches connecting the second and third mentioned tube at the bottom of the carburetor. i

4. In combination, an internal combustion engine, comprising an intake manifold and' a crank case, a. carburetor including a mixing chamber, a ioat'chamber below the mixing chamber, a sleeve extending through the chamber having apertures to receive gasoline from the float chamber and aperturesto de liver the gasoline for the mixing chamber, an air intake pipe leading into the mixing chamber, a pipe leading from the mixing chamber adapted to be connected with the said intake manifold, a tube rising through the chambers terminating in the mixing chamber, said tube last mentioned adapted toY be connected with the breatherfpipe of said crank case, a shank slidable through openings in the last mentioned tube, said shank being inclined and terminatingat its lower end in a disk, a rest in the carburetor for said disk, said disk being located at the innervend of the air .intake pipe, said shank having a port normally out of registry with y the interior of the second mentioned tube so that when a certain amount of air is sucked in through the air intake pipe it will movev the disk inwardly to bring the portinto registry with the second mentioned tubeand cause the shank to partiall cut out the first mentioned tube, a third tu e rising through the chamber terminating in the mixing chamber, branches connecting the second and third mentioned tube atl the bottom of the carburetor,- a needle valve structure in the third tube.

5. In combination, an internal combustion be connected with the breather pipe of said Y crank case, a shank slidable through openings in the last mentioned tube, said shank being inclined and terminating at its lower end in a disk, a rest in the carburetor for said disk, said disk being located at the inner end lof the air intake pipe, said shank having a port normally out of registry with the interior of the second mentioned tube so that when a certain amount of air is sucked in through the air intake pipe it will move i the disk'inwardly to `bring the port into registry with the second mentioned tube and cause the shank to partiall cut out the first mentioned tube, a third tu e' rising through vthe chamber terminating in the mixing chamber, branches connecting the second and third mentioned tube at the bottom of thel carburetor,a needle valve structure in Lthe third tube, a needle valve structure in the first mentioned tube. L

. Intestimony whereof I aiix'm'y signature JACK SAMUEL BRON-GATO; 

